diff --git a/appveyor.yml b/appveyor.yml
index 2472be5ae..c3c6f383f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,6 +17,7 @@ skip_tags: true
 #---------------------------------#
 
 environment:
+  DXSDK_DIR: "C:\Program Files (x86)\Microsoft DirectX SDK"
   GH_TOKEN:
     secure: dYnBDQkiY5oVjIlswzBX9BJigNtBGXgGlp1tK3XbHzrDEDrs2vaKD5m+Oz5OSz1C